Submission #1017654

#	Time	Username	Problem	Language	Result	Execution time	Memory
1017654		vjudge1	Foehn Phenomena (JOI17_foehn_phenomena)	C++17	100 / 100	73 ms	13236 KiB

foehn_phenomena

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define ff first
#define ss second
#define tobit(n) bitset<20>(n) //выводит 20 элементов в битовую систему
#define all(v) (v).begin(), (v).end() 
#define rtt(v, k) rotate(v.begin(), v.begin() + k, v.end()); //move k elements back
signed main(){
    int N, Q, S, T, result = 0; cin >> N >> Q >> S >> T;
    S = S * (-1); T = T * (-1);
    vector<int> v(N + 1), answer(N);
    for(int i = 0; i < N + 1; i++) cin >> v[i];
    for(int i = 0; i < N; i++){
        answer[i] = v[i + 1] - v[i];
        if(answer[i] > 0) result += S * answer[i];
        else result += T*answer[i];
    }
    for(int i = 0; i < Q; i++){
        int L, R, X; cin >> L >> R >> X;
        if(answer[L - 1] > 0) result -= S * answer[L - 1];
        else result -= T * answer[L - 1];
        if(R < N){
            if(answer[R] > 0) result -= S * answer[R];
            else result -= T * answer[R];
        } answer[L - 1] += X;
        if(R < N) answer[R] -= X;
        if(answer[L - 1] > 0) result += S * answer[L - 1];
        else result += T * answer[L - 1];
        if(R < N){
            if(answer[R] > 0) result += S * answer[R];
            else result += T * answer[R];
        } cout << result << "\n";
    }
}
// NEED TO FAST CIN && COUT //
const int fastIO = [](){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr); cout.tie(nullptr);
    return 0;
}();

• Subtask 1: 30 / 30
• Subtask 2: 10 / 10
• Subtask 3: 60 / 60